Chemokines in health and disease
2002
Gangur, Venu | Birmingham, Neil P. | Thanesvorakul, Sirinart
Chemokines belong to a large family of structurally related proteins that play a pivotal role in immune system development and deployment. While a large number of chemokines (∼50) and their receptors (∼20) have been identified from humans or mice, only a few are known in domestic veterinary species. Recent data implicate CXCL8 (old name, IL-8), CXCL10 (old name, IP-10) (both CXC chemokines) and CCL2 (old name, MCP-1) (a CC chemokine) in veterinary infections, inflammatory diseases or reproduction. There is compelling evidence for neutrophil targeting chemokines such as CXCL8, in ovine bacterial mastitis, bovine pneumonic pasturellosis and equine chronic obstructive pulmonary disease (COPD). Monocyte and lymphocyte targeting chemokines appear to play a role in caprine arthritis encephalitis (CCL2) and canine endotoxemia (CXCL10). Interestingly CCL2 is considered a missing link between hormonal and cellular control of luteolysis. On the other hand, canine cardiovascular conditions are associated with overexpression of CCL2 and CXCL8. Furthermore, a number of veterinary viral pathogens encode chemokine/chemokine receptor like molecules or chemokine binding proteins that may help viruses to evade the immune system. Here, we provide an overview of the chemokine system and critically evaluate the current literature implicating chemokines in veterinary pathophysiology. Furthermore, we highlight promising areas for further research and discuss how and why chemokine antagonists are viewed as next generation anti-inflammatory drugs for the 21st century.
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